54.39.0.140📋 Copy

## IP Intelligence Briefing: 54.39.0.140

Classification: Moderate Risk (Score: 40) | Report Date: 2026-06-20

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Executive Summary

IP 54.39.0.140 is an OVH cloud hosting endpoint associated with Ahrefs.net infrastructure. The IP presents moderate risk due to its hosting classification, geographic validation anomalies, and high-abuse density neighborhood. No active threat indicators, campaigns, or blacklisting evidence detected.

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Ownership & Infrastructure

The IP resolves to `proxy-ca004-san140.ahrefs.net` via DNS PTR record, confirming association with Ahrefs infrastructure. The subnet is classified as hosting with cloud compute infrastructure type.

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Threat Assessment

Risk Indicators:

• Risk Score: 40 (Moderate)
• Abuse Confidence Score: Not available
• Blacklist Count: 0
• Known Attacker: No
• Spam Source: No
• Tor Exit Node: No

Network Classification:

• Hosting: Yes
• CDN: No
• VPN/Proxy: No
• Mobile/Residential: No

Geolocation Anomalies:

• Claimed location: Canada (QC)
• Distance from probe origin: 5,628.6 km
• Violation: RTT 25ms is significantly below minimum possible 112.6ms for this distance
• Geographic validation flagged as implausible

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Neighborhood Analysis

Subnet: 54.39.0.0/24

• Classification: High Abuse
• Abuse Density: 0.6953 (69.53%)
• Total Siblings: 256
• Active Siblings: 184
• Threat Siblings: 178
• Inherited Risk: 27

The IP resides in a high-abuse density subnet. Approximately 70% of neighbors exhibit abuse indicators, with 178 of 256 total siblings flagged as threats. This contextualizes the moderate risk score within a compromised subnet environment.

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Historical Observations

Total Observations: 22 signals over monitoring period

Key Historical Signals:

• DNS Resolution: Consistent resolution to `ahrefs.net` domain with CAA records present
• Infrastructure: Confirmed cloud/hosting classification (OVH provider)
• Geolocation: Multiple signals showing RTT violations (25-44ms observed vs. 112.6ms minimum for 5,629km distance)
• Control Plane: DNSSEC valid, CAA records present

No evolution toward malicious activity observed. Signals remain stable with no persistent malicious indicators.

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Relationships

Relationship Count: 44 entities

• Network Relationships: Multiple entries to OVH-CUST-281059683
• No cross-network relationships detected
• No certificate or hostname associations beyond Ahrefs domain

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Recommended Actions

No specific threat-based recommendations generated due to lack of active threat indicators. However, the following defensive measures are recommended given the subnet's high-abuse classification:

Note: Subnet-wide blocking may be warranted given the 69.53% abuse density.

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Threat Intelligence Narrative

IP 54.39.0.140 operates within OVH cloud infrastructure as part of Ahrefs.net hosting services. The moderate risk score (40) reflects the subnet's high-abuse density environment rather than direct malicious activity. Geographic validation anomalies suggest potential misconfiguration or spoofing. The IP exhibits no active threat indicators, campaigns, or blacklist membership.

Recommended SOC Handling: Monitor but do not automatically block without additional correlation. Consider subnet-level scrutiny given the 178 threat siblings in the 54.39.0.0/24 range. The infrastructure appears to be legitimate cloud hosting with no evidence of active exploitation or command-and-control activity.

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Data Sources: IPDebrief Intelligence Platform | Analysis Date: 2026-06-20

This summary was generated by AI and may contain inaccuracies. Verify critical details independently.